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Merge pull request #18849 from peppy/fix-another-test-deadlock

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Fix test deadlock due to TPL threadpool saturation
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Dan Balasescu 2022-06-26 17:37:15 +09:00 committed by GitHub
commit 0bd230217b
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1 changed files with 13 additions and 17 deletions
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30
osu.Game/Tests/Visual/OnlinePlay/OnlinePlayTestScene.cs
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@ -4,14 +4,14 @@
#nullable disable
using System;
using System.Threading.Tasks;
using NUnit.Framework;
using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Game.Database;
using osu.Framework.Logging;
using osu.Game.Beatmaps;
using osu.Game.Database;
using osu.Game.Online.API;
using osu.Game.Online.Rooms;
using osu.Game.Screens.OnlinePlay;
@ -72,22 +72,18 @@ namespace osu.Game.Tests.Visual.OnlinePlay
((DummyAPIAccess)API).HandleRequest = request =>
{
TaskCompletionSource<bool> tcs = new TaskCompletionSource<bool>();
// Because some of the handlers use realm, we need to ensure the game is still alive when firing.
// If we don't, a stray `PerformAsync` could hit an `ObjectDisposedException` if running too late.
Scheduler.Add(() =>
try
{
bool result = handler.HandleRequest(request, API.LocalUser.Value, beatmapManager);
tcs.SetResult(result);
}, false);
#pragma warning disable RS0030
// We can't GetResultSafely() here (will fail with "Can't use GetResultSafely from inside an async operation."), but Wait is safe enough due to
// the task being a TaskCompletionSource.
// Importantly, this doesn't deadlock because of the scheduler call above running inline where feasible (see the `false` argument).
return tcs.Task.Result;
#pragma warning restore RS0030
return handler.HandleRequest(request, API.LocalUser.Value, beatmapManager);
}
catch (ObjectDisposedException)
{
// These requests can be fired asynchronously, but potentially arrive after game components
// have been disposed (ie. realm in BeatmapManager).
// This only happens in tests and it's easiest to ignore them for now.
Logger.Log($"Handled {nameof(ObjectDisposedException)} in test request handling");
return true;
}
};
});